ER Smart CPT Menu Links for GD Integration

[alexrollin]

This is ER for new WP Menu system link.

When user adds CPT Restaurants, there will be new Menu item "My Restaurant Listings"

Site owner can add this link to a menu.

The menu item is automatically visible ONLY when the User HAS a Restaurant listing.

User should be able to change the text title of the link but the link itself is automatic, and points to the Listing -> My Restaurant Listings subtab.

[wpdev10]

Needs inputs from @Stiofan